What is the most important information I should know about teriflunomide (Aubagio)?

Teriflunomide is used to reduce flare-ups in people with relapsing multiple sclerosis (MS). Teriflunomide is not a cure for MS.

You should not use this medicine if you have severe liver disease, or if you are also taking leflunomide (Arava).

Teriflunomide can harm an unborn baby or cause birth defects. Do not use teriflunomide if you are pregnant. Tell your doctor right away if you become pregnant during treatment or within 2 years after your treatment ends.

Use birth control to prevent pregnancy while you are using teriflunomide, whether you are a man or a woman. Teriflunomide use by either parent may cause birth defects.

Teriflunomide can lower blood cells that help your body fight infections. This can make it easier for you to get sick from being around others who are ill. While using teriflunomide, you may need blood tests every 6 months. Your blood pressure will also need to be checked often.

After you stop taking teriflunomide, the drug could stay in your body for up to 2 years. You may need to be treated with other medications to help your body eliminate teriflunomide quickly. Follow your doctor's instructions.